Retrieves <code>GroupId</code> in an identity store.
The globally unique identifier for the identity store.
A unique identifier for a user or group that is not the primary identifier. This value can be an identifier from an external identity provider (IdP) that is associated with the user, the group, or a unique attribute. For the unique attribute, the only valid path is <code>displayName</code>.
Success
The identifier for a group in the identity store.